I have always preferred working on concrete problems rather than abstract theories.

可持续发展不是选择题，而是责任。

The most powerful stories are those that reveal the fragility of the human condition.

成功不是幸福的关键。幸福才是成功的关键。如果你热爱你所做的事情，你就会成功。

Innovation is not just about new ideas, but about executing them brilliantly.

互联网的力量在于它的普遍性。